Valve



July 17, 1928.

1,677,126 H. w. DENNIS VALVE Filed Jun 17, 1925 2 Shets-Sheet 1 Fig.1.

Inventor July,17, 1928. 1,677,126

w. DENNIS VALVE 2 Sheets-Sheet 2 Filed June 17, 1925 Inventor (A RI-W .dttorney.

Patented July .17, 1928.

UNITED STATES PATENT OFFICE.

, nunnn'r WALTER DENNIS, or LONDON, ENGLAND.

VALVE.

Application filed June 17,1925, Serial No. 37,855, and in Great Britain'lune 30, 1924.

This invention relates to valves and while it is especially applicable to steam valves and to valves for penetrati've liquids suchas the lighter hydrocarbons, as well as to valves of the sluice or sliding type, is of general application to valves having rising or nonrising spindles.

The invention has among itsobjects to provide means for making a tight joint in event of leakage through the main stufling box, and to permit of the re packingof the main stalling box when the valveis open.

According to the invention an inner or inverted stufling box is provided, the gland ring of which is adapted to be forced outwards or upwards to compress the packing therein on the reverse rotation of the valve spindle, by which the valve or some art upon the valve spindle may press the g and ring and compress the packing to the extent required to ensure a fluid tight joint. The I gland ring may he held in its inverted position to retain the packin in the stufiing box by means of screw-threaded pins or bolts,

having countersunk heads, passing through the flange of the gland ring, so that thus when it is required to make a tight joint in the in- .ncr or inverted stuffing box, as when the valve casing is capable of being tightened while the valve is in use, in order that the other main part can be re-packed.

The invention comprises the constructional features hereinafter described.

Two constructions of valve provided with an inner stufiing box according to the invention are illustrated, by way of example, in

the accompanying drawings:

Fig. 1 is a view partly in section and partly in elevation of a stop valve of the nonrising spindle type.

Fig. 2 is a view partly in section and partly in elevation of a stop valve of the rising spindle type.

In carrying the invention into efiect according to one construction in its applica tion to a stop valve of thenon-rising spirr dle type, according to the construction illustrated in Fig. 1 of the drawings, the valve casing a is provided as usual \vitha cover ed for its reception within or beneath the stuffing box 0 and in such manner that by means of this collar the fixity of position of the spindle d is ensured. Beneaththe cover plate a'cavity or stulfing box 7 is provided adapted for the reception of:a gland ring 9 which is held in position in the manner hereinbefore described by two screw-threaded pins or bolts it. Where the valve is, for example, of the sluice or sliding type the construction is such that the valve is adapted to be raisedinto suchposition that a boss or part 2' upon the valve may contact with the inner or inverted gland ring in the manner hereinbefore described. 3

The manner in which the gland ring 9 is held permits of the independent outward or upward movement of the gland ring in the manner, described for the purpose of making a fluid tight joint, the thrust upon the spindle being taken by the collar 6 which may be provided of any suitable form and is advantageously of double-conical form.

The invention may be similarly carried in-.

to eifect in its application to a stop valve of the rising spindle type, as illustrated, for example, in Fig. 2 of the drawings, in which the use of the collar as hereinbefore described is dispensed with; the upper part j of the valve or some other part on the valve spindle is being provided to engage with the gland ring 9 in a similar manner for the purpose of tightly compressing th'e packing and making a tight joint when required on 3111c lppward movement of the valve spin- It will be understood that by such means a deep though divided stuffing box is provided, while a fluid tight joint may always be ensured when the valve is open, by the compression of the packing within the inner or inverted stufiing box in the manner described.

I claim:

1. Avalve comprising in combination, a casing, a movable valve disposed within said casing, a closure member upon and forming part of said casing, a main stufling box disv described.

said inverted gland and for J permitting the said invertedgland posed upon said closure member, an inverted auxlliary stuffing box disposed on the under side of said closure member and within said casing, a valve spindle passing through said closure member and through said main and auxiliary stuifing boxes, an inverted gland ring andvpacking forming part of-said auxiliary stufling box means for maintaining ring loosely in position ring to be moved into the .saidauxiliary stufiingibox, and means adapted in the raised position of said valve toengage said inverted gland ring to apply pressure upon the packing in said auxiliary stalling box on said valve being fully open, substantially as 2. A valve comprising in combination, :1

- casing, ai movable valve disposed within said casing, a closure member upon and forming part of said casing, a main stuffing box disvalve, means comprising a collar for preventing axial movement of said valve operating spindle means by which the said valve may be moved axially on the rotationot' the *said spindle, an inverted gland ring and packing forming part ofrsaid auxiliary stuffing box, meansfor maintaining said inverted gland ring loosely in position and for permitting the said inverted gland ring to be moved into the said auxiliary stalling box, and means adapted in the raised position of the said valve to engage said inverted gland ring to apply pressure upon the packing in said auxiliary stufling box on said valve being fully open, substantially as described.

3. A valve comprising in combination, a casing, having a througlmvay passage therein, a movable valve disposed transversely with respect to said through-way passage to control the flow of fluid therethrongh, a closure member upon and forming part of said casing, a main stuffing box disposed upon said .closure member, an inverted auxiliary stuiiingbox disposed at theunderside of said closure member and Within said casing, a valve operating spindle passing through said closure member and through said main and auxiliary stufiing boxes and adapted on its movement to cause the movement of said valve, an inverted gland ring and packing forming part of said auxiliary stufiing box, means formaintaining said inverted gland ring loosely in position, and for pern'iitting the said inverted gland ring to be moved into the said auxiliary stalling box, and means adapted in the raised position of the said valve to engage said inverted gland ring to apply pressure upon the packing in said auxiliary stuffing box on said valve being fully open, substantially as described.

HUBERT 'WALT'ER DENNIS. 

